Description

CONVERTER OF RS-485/ETHERNET WI-FI INTERFACES

Enables the access to devices with RS-485 interfaces for master devices and SCADA applications through the Ethernet WiFi network (independently of the communication protocol).

RS-485/Ethernet Wi-Fi converter PD8W type allows master devices to transmit data via a wireless Ethernet Wi-Fi network to the devices with RS-232 and RS-485 interface.

The converter has three operating modes: RealPort network service, serial bridge service with the UDP protocol, TCP Socket service. In the first and third mode, the switching master device of the system is a PC using Ethernet Wi-Fi interface. In the second mode, the converter works with a device with Master function and RS-232 and RS-485 serial interfaces.

The converter PD8W to work with RealPort network service requires the installation of a virtual serial port driver on a PC with Microsoft Windows. Thanks to the PD8W type converters, this driver provides the existing master systems, i.e. programs like Lumel Heat and Lumel Energy, the ability to transmit data between devices with RS-485 or RS-232 interface using Ethernet Wi-Fi network (Fig. 1). When used in this way, the converter allows to work with one master computer in the given time. When using PD8W to support Modbus and Lumbus industrial protocols

– its correct interaction with master systems installed on a PC depends on the built-in mechanisms to control time intervals between the received transmission characters.

Using PD8W in the second mode, the RS-485 bus can be expanded with successive segments using additional PD8W converters and Ethernet Wi-Fi local network. Properly configured, one pair of converters allows to build a system working in the serial bridge mode. It is also possible to configure their operation in „one-to-several” Mode. Function 2 of the converter operates in the Ethernet Wi-Fi local network with UDP datagram protocol support.